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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Solubility of oleic acid, triacylglycerol and their mixtures in supercritical carbon dioxide and thermodynamic modeling of phase equilibrium

Texto completo
Autor(es):
Garmus, Tabata T. [1] ; de Oliveira Giani, Natasha Aires [1] ; Filho, Walter A. Rammazzina [2] ; Queiroga, Carmen L. [3] ; Cabral, Fernando A. [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Campinas UNICAMP, Dept Food Engn, BR-13083862 Campinas, SP - Brazil
[2] Fed Technol Univ Parana, BR-86300000 Cornelio Procopio, PR - Brazil
[3] Univ Campinas UNICAMP, Chem Biol & Agr Pluridisciplinary Res Ctr CPQBA, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF SUPERCRITICAL FLUIDS; v. 143, p. 275-285, JAN 2019.
Citações Web of Science: 1
Resumo

To evaluate the selectivity of supercritical carbon dioxide (scCO(2)) as a solvent to deacidify vegetable oils, the solubility of oleic acid and of a mixture of oleic acid and refined sunflower oil in scCO(2) was measured. Sunflower oil was adopted as a pseudo-pure component and the phase equilibrium of ternary and binary systems were thermodynamically modeled by the Peng-Robinson equation of state with classical mixing rule. The values of the estimated and/or adopted critical properties in modeling thermodynamics were shown to be of great influence on the quality of data correlation. Although correlating data from binary systems is possible, the modeling was incapable of satisfactorily predicting the behavior of the phase equilibrium of the ternary system. The large deviations observed may derive from the presence of specific intermolecular interactions between the components of these systems that were not considered in this type of modeling. (AU)

Processo FAPESP: 15/09644-3 - Processos não isotérmicos de separação empregando tecnologia supercrítica e difusão térmica
Beneficiário:Fernando Antonio Cabral
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 15/05340-0 - Modelagem termodinâmica na desacidificação de óleo de girassol com dióxido de carbono supercrítico
Beneficiário:Natasha Aires de Oliveira Giani
Linha de fomento: Bolsas no Brasil - Iniciação Científica